Hebrews 11:18

the one it had been said about, Your seed will be traced through Isaac.

Genesis 21:12

But God said to Abraham, “Do not be concerned about the boy and your slave. Whatever Sarah says to you, listen to her, because your offspring will be traced through Isaac.

Romans 9:7

Neither are they all children because they are Abraham’s descendants. On the contrary, your offspring will be traced through Isaac.

Genesis 17:19

But God said, “No. Your wife Sarah will bear you a son, and you will name him Isaac. I will confirm My covenant with him as an everlasting covenant for his future offspring.

Treasury of Scripture Knowledge

Summary

Hebrews 11:18

Of whom it was said, That in Isaac shall thy seed be called:

General references

Genesis 21:3

Genesis 22:3

Bible References

General references

Abraham named his son who was born to him—the one Sarah bore to him—Isaac.

So Abraham got up early in the morning, saddled his donkey, and took with him two of his young men and his son Isaac. He split wood for a burnt offering and set out to go to the place God had told him about.